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Thread: Scottie Builds ants sometimes

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    Last weekend I went to the university of bristol beees robots wars and entered these 3 bots. From left to right, Pingu, Brutal Barbera and Sawboss mkvi.


    Pingu is a flipper and its specs are:

    weight: 138g
    body: 3d printed pla with 2mm abs sheet and 0.75mm ploycarb on the base of the flipper wedge
    drive: 4 wheel drive with 2 wheels connected with oring pulleys
    motors: 600rpm metal gear motors
    flipper servo: Turnigy TGY-306g-hv
    electronics: 2s6a dasmikro with random dsm2 receiver
    battery: 7.4V 180mah lipo

    I had some problems with this robot. Basically any receiver I connected to it would break. I used 4 or 5 receivers on this bot. Sometimes they would break immediately some after about a few minutes. Powered receivers with both 5V and the raw battery voltage (upto 8.2V i think?) I also used a lemon RX and that broke too... I'm pretty unsure why this is happening. I'm speculating that it could be something to do with the motors, possibly somthing to do with EMI. I am not using spark capacitors that are supplied by the dasmikro. They are also alot slower than the typical 600rpm motors, so i dont know what they are. Weirdly the gearboxes are identical to the normal 600rpm types.

    Brutal barbera is described in the first form post in this thread.


    Sawboss is a walker with a rotating blade and its specs are:

    weight: 178g
    body: 3d printed pla with 2mm abs sheet
    blade: 3mm thick titanium at 18g
    drive: 6 legged walker
    motors: 600rpm metal gear motors
    weapon motor: V-spec 2205 2350
    weapon motor ESC: afro 20A
    electronics: 2s6a dasmikro with random dsm2 receiver. drive motors are powered via dc-dc stepdown converter
    battery: 11.1V 180mah lipo

    Sawboss is the 6th iteration of this robot. The previous iterations will enjoy a post of their own. Ill try and find some footage of it walking. The weapon motor is powered by 11.1V probably a bit to overpowered for antweight, it will drain my battery after 2 fights. But when it can get a hit it can release alot of force. During one of the last brawls at beees it managed to get entangled on one of their arena hazards.. and another robot. This put the motor into stall condition and it got rather hot, melting its body. Funnily it could still drive after being attached to a big lump of metal and a 150g bot.
    Last edited by Scottie; 12th March 2018 at 14:42.

  5. #5
    Ocracoke's Avatar
    Team Kaizen

    Oooh.... looks good. Can't wait to see if there are any videos of it, the last one was pretty good. Are Pingu's motors Pololu or Solarbotics motors (not that it should matter, they are effectively the same motor)?
    Team Kaizen - Build Diary for all the robots

    AW: Amai, Ikari, Osu, Ramu
    BW: Shu!, The Honey Badger
    FW: Azriel
    MW: Jibril, Kaizen

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    Ocracoke's Avatar
    Team Kaizen

    Fair enough, they are a bit expensive from there but I am sure they'll deliver on time.
    Team Kaizen - Build Diary for all the robots

    AW: Amai, Ikari, Osu, Ramu
    BW: Shu!, The Honey Badger
    FW: Azriel
    MW: Jibril, Kaizen

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    Some lovely machines Scottie! Pingu looks great!! Shame about it not fully working! Really floats my boat though!

    Bad Wolf

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    Alright! so I entered my current 3 bots into aws54. I completely replaced motors and electronics of pingu and i also got the body reprinted white, so now its penguin coloured!


    Here is me testing it

    During AWS it came up against a particularly nasty egg beater drum spinner.... and lost. But it survived with most of its damage being superficial.


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